#!/bin/bash

# Slackware build script for LizardFS

# Copyright 2018 Marcin Szychowski <szycha@gmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=lizardfs
VERSION=${VERSION:-3.12.0}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

LIZARDFS_UID=${LIZARDFS_UID:-353}
LIZARDFS_GID=${LIZARDFS_GID:-353}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Bail out if user or group isn't valid on your system
# For slackbuilds.org, assigned mfs uid/gid are 353/353
# See http://slackbuilds.org/uid_gid.txt
if ! getent group mfs 2>&1 > /dev/null; then
  echo "  You must have a mfs group to run this script."
  echo "    # groupadd -g $LIZARDFS_GID mfs"
  exit 1
elif ! getent passwd mfs 2>&1 > /dev/null; then
  echo "  You must have a mfs user to run this script."
  echo "    # useradd -u $LIZARDFS_UID -g $LIZARDFS_GID -d /var/lib/mfs mfs"
  exit 1
fi

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
(cd $PRGNAM-$VERSION; patch -p0 < $CWD/iostat.h.patch)
cd $PRGNAM-$VERSION
for z in $CWD/*.zip; do
  unzip $z -d external/
done
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS -fcommon" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -fcommon" \
    -DCMAKE_INSTALL_PREFIX=/ \
    -DENABLE_DEBIAN_PATHS=YES \
    -DENABLE_TESTS=NO \
    -DENABLE_DOCS=YES \
    -DENABLE_OFFICIAL_BUILD=NO \
    -DSET_RC_BUILD_NUMBER=NO \
    -DENABLE_CLIENT_LIB=YES \
    -DENABLE_NFS_GANESHA=YES \
    -DCMAKE_BUILD_TYPE=Release ..
# For the brave
# make -j 24 || make -j 12 || make -j 6 || make -j 3 || make -j 2 || make
  make
  make install DESTDIR=$PKG
cd ..

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mv $PKG/usr/share/man $PKG/usr/
find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

for d in chunkserver exports goals hdd master metalogger mount topology; do
  mv $PKG/etc/mfs/mfs$d.cfg.dist $PKG/etc/mfs/mfs$d.cfg.new
done
for l in '' global; do
  mv $PKG/etc/mfs/${l}iolimits.cfg.dist $PKG/etc/mfs/${l}iolimits.cfg.new
done

chown -R root:root .
mkdir -p $PKG/var/run/mfs $PKG/var/lib/mfs
chown mfs:mfs $PKG/var/run/mfs $PKG/var/lib/mfs

mkdir -p $PKG/etc/rc.d
cp -a $CWD/rc.lizardfs-cgiserv.new $CWD/rc.lizardfs-chunkserver.new \
  $CWD/rc.lizardfs-master.new $CWD/rc.lizardfs-metalogger.new \
  $CWD/rc.lizardfs.new $PKG/etc/rc.d/

mkdir -p $PKG/var/log/setup
cp -a $CWD/setup.lizardfs-services.new $PKG/var/log/setup/

chmod +x $PKG/var/log/setup/setup.lizardfs-services.new \
  $PKG/etc/rc.d/rc.lizardfs-chunkserver.new

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  COPYING INSTALL NEWS README.md UPGRADE ReleaseNotes \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/README > $PKG/usr/doc/$PRGNAM-$VERSION/README.SBo
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
